New in Symfony 2.4: Limiting Session Metadata Writes

Today's blog post is as easy as it can get, as this new feature comes with a
dedicated cookbook entry in the Symfony documentation.

In Symfony 2.4, the new framework.session.metadata_update_threshold setting
lets you define a certain amount of time between two session writes when
nothing (except the metadata) changes in your session. Setting it to a large
value helps with performance, but at the same time, it can lead to sessions
being garbage collected too early.

Reading the cookbook is the best way to learn more about the trade-offs.